Motor housing beam structure

Abstract

The utility model relates to power motor technical field, especially a motor shell bar structure, including shell body, the inside of shell body is provided with the accommodation cavity, and the periphery is provided with the connecting bar, the connecting bar is provided with a plurality of, a plurality of connecting bar presents the ring to the even distribution in the periphery of shell body, the periphery between the one end of connecting bar and shell body forms the assembly step, the end of connecting bar is provided with the assembly hole, and the one end of assembly hole is towards assembly step. The utility model discloses through optimizing the bar layout and the connecting structure, successfully realized the unification of high strength, light weight, easy assembly and high integration, has the remarkable technical progress and practical value.

Description

Technical Field

[0001] This utility model relates to the field of power motor technology, and in particular to a motor housing rib structure. Background Technology

[0002] In the field of precision drive equipment such as hub motors and servo motors, the motor housing, as a key structural component supporting the internal stator, rotor, bearings, and transmission parts, directly affects the reliability, efficiency, and application range of the entire machine due to its mechanical properties, lightweight level, and ease of assembly. Traditional motor housings are mostly made of integral casting or welding, and rigidity is enhanced by setting continuous or intermittent rib structures on the inner or outer walls. Although this design can provide a certain structural strength, it often has problems such as material redundancy, large weight, and high moment of inertia, which are not conducive to the miniaturization, lightweighting, and improvement of dynamic performance of the equipment.

[0003] Especially in applications with stringent requirements for power density and response speed, such as electric vehicles, industrial robots, and automated equipment, an excessively heavy casing can significantly increase rotational inertia, reducing system acceleration performance and energy efficiency. Furthermore, traditional rib layouts often lack systematic optimization, easily leading to uneven stress distribution. Under long-term high-speed operation or impact loads, this can cause localized fatigue cracks or vibration noise, affecting motor lifespan and control accuracy. At the assembly level, many casing structures do not fully consider the integrated installation requirements of external components (such as brackets, sensors, and heat sinks), often requiring additional machining of mounting bases or adapters, increasing structural complexity, production costs, and assembly time.

[0004] Therefore, there is an urgent need in the existing technology for a new type of motor housing rib structure that can effectively achieve lightweight design, improve stress distribution, suppress vibration and noise, and provide a convenient and reliable integrated installation solution for external accessories, so as to meet the application requirements of modern high power density and high dynamic performance motors, while ensuring sufficient rigidity and strength. Utility Model Content

[0005] To solve the above problems, this utility model has successfully achieved a balance of high strength, lightweight, easy assembly and high integration by optimizing the rib layout and connection structure, resulting in a motor housing rib structure with significant technological progress and practical value.

[0006] The technical solution adopted by this utility model is: a motor housing rib structure, including a housing body, the housing body having an internal mounting cavity and an external circumference with connecting ribs, a plurality of connecting ribs being provided, the plurality of connecting ribs being evenly distributed in a circumferential direction on the external circumference of the housing body, an assembly step being formed between one end of the connecting rib and the external circumference of the housing body, and an assembly hole being provided at the end of the connecting rib, one end of the assembly hole facing the assembly step.

[0007] A further improvement to the above solution is that the outer shell body includes an upper shell and a tail cover, the tail cover is disposed at the bottom of the upper shell, and the upper shell and the tail cover are integrally cast.

[0008] A further improvement to the above solution is that the outer shell body includes an upper shell and a tail cover. The bottom of the upper shell is provided with an assembly insertion step, and the tail cover is provided with an insertion end. The insertion end is used to insert into the assembly insertion step to form a mounting cavity.

[0009] A further improvement to the above solution is that one end of the tail cap extends to the outside of the mounting cavity and protrudes outward.

[0010] A further improvement to the above scheme is that the mounting cavity is used to install the drive component of the motor. The drive component includes a drive motor arranged from the inside to the outside of the mounting cavity and a fixed base. The fixed base is provided with a rotating connecting element. The fixed base is set in the mounting cavity through the rotating connecting element. A transmission component is installed in the fixed base. A transmission connecting ring is provided in the mounting cavity. The transmission connecting ring is connected to the transmission component. The drive motor is located at one end of the fixed base and is used to drive the transmission component.

[0011] A further improvement to the above solution is that the fixed base includes an upper support and a lower support, the upper support and the lower support are connected to each other, and the transmission component is disposed between the upper support and the lower support.

[0012] A further improvement to the above scheme is that two rotating connecting elements are provided, and the two rotating connecting elements are respectively used to connect the upper support and the lower support to the placement cavity.

[0013] A further improvement to the above solution is that the assembly steps are located at the front end and / or rear end of the housing.

[0014] A further improvement to the above solution is that each end of the connecting rib is provided with an assembly hole, and an assembly sleeve is provided in the assembly hole.

[0015] A further improvement to the above solution is that a transition arc surface is provided on the outer side of the connecting rib, and the transition arc surface is integrally cast with the outer circumference of the outer shell body.

[0016] The beneficial effects of this utility model are: Compared to existing motor housings, this invention achieves multiple beneficial effects—structural strength, lightweighting, ease of assembly, and functional integration—by uniformly distributing multiple connecting ribs with assembly steps and holes around the outer periphery of the housing. The multiple connecting ribs, evenly distributed circumferentially, form a strong reinforcing skeleton around the outer periphery of the housing, effectively improving the radial stiffness and torsional strength of the housing. This suppresses vibration and deformation of the motor during high-speed operation or under complex loads, ensuring the alignment accuracy of internal precision transmission components, thereby improving the smoothness, reliability, and service life of the motor. Compared to traditional integral thickened housings, the discretely distributed rib structure provides effective support along critical force paths while minimizing material usage, achieving the goal of lightweight housing. This reduces material costs and motor rotational inertia, and also helps improve the motor's dynamic response speed and energy efficiency. The assembly step formed by one end of the connecting rib and the outer periphery of the housing, in conjunction with the assembly hole at the end of the rib, greatly optimizes the assembly process. The assembly step provides a precise positioning reference and a stable mounting plane for external components, ensuring the accuracy and consistency of assembly. The mounting holes directly facilitate the connection of fasteners, making the installation of external accessories more convenient and secure, effectively improving production efficiency and assembly quality. This invention, through optimized rib layout and connection structure, successfully achieves a balance between high strength, lightweight, easy assembly, and high integration, demonstrating significant technological advancement and practical value. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the rib structure of the motor housing of this utility model; Figure 2 for Figure 1 A perspective view of another embodiment of the rib structure of the motor housing; Figure 3 for Figure 1 A perspective view of another embodiment of the rib structure of the motor housing; Figure 4 for Figure 1 Front view of the rib structure of the motor housing; Figure 5 for Figure 4 Sectional view of AA.

[0018] Explanation of reference numerals in the attached drawings: outer shell 1, mounting cavity 11, transmission connecting ring 111, connecting rib 12, assembly hole 121, assembly tooth sleeve 122, transition arc surface 123, assembly step 13, upper shell 14, assembly insertion step 141, tail cover 15, insertion end 151, driving component 2, driving motor 21, fixed base 22, rotating connecting element 221, transmission component 222, upper bracket 223, lower bracket 224. Detailed Implementation

[0019] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0020] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Figures 1-5As shown, in one embodiment of this utility model, a motor housing rib structure is disclosed, including a housing body 1. The housing body 1 has an internal mounting cavity 11 and connecting ribs 12 on its outer periphery. Multiple connecting ribs 12 are arranged circumferentially around the outer periphery of the housing body 1. An assembly step 13 is formed between one end of each connecting rib 12 and the outer periphery of the housing body 1. An assembly hole 121 is provided at the end of each connecting rib 12, with one end of the assembly hole 121 facing the assembly step 13. This embodiment achieves multiple beneficial effects—structural strength, lightweight, ease of assembly, and functional integration—by circumferentially distributing multiple connecting ribs 12 with assembly steps 13 and assembly holes 121 around the outer periphery of the housing body 1. The circumferentially distributed connecting ribs 12 form a strong reinforcing skeleton around the outer periphery of the housing body 1, effectively improving the radial stiffness and torsional strength of the housing. This design effectively suppresses vibration and deformation of the motor during high-speed operation or under complex loads, ensuring the alignment accuracy of internal precision transmission components and thus improving the motor's smoothness, reliability, and service life. Compared to traditional thickened overall housings, the discretely distributed rib structure provides effective support along critical stress paths while minimizing material usage, achieving a lightweight housing. This reduces material costs and motor rotational inertia, and also helps improve the motor's dynamic response speed and energy efficiency. The assembly step 13 formed by connecting one end of the rib 12 to the outer periphery of the housing body 1, in conjunction with the assembly hole 121 at the end of the rib, greatly optimizes the assembly process. The assembly step 13 provides a precise positioning reference and a stable mounting plane for external components, ensuring assembly accuracy and consistency. The assembly hole 121 directly serves the connection of fasteners, making the installation of external accessories more convenient and secure, effectively improving production efficiency and assembly quality. This embodiment, through optimizing the rib layout and connection structure, successfully achieves a unity of high strength, lightweight, easy assembly, and high integration, demonstrating significant technological advancement and practical value.

[0022] The outer shell body 1 includes an upper shell 14 and a tail cover 15. The tail cover 15 is located at the bottom of the upper shell 14, and the upper shell 14 and the tail cover 15 are integrally cast. In this embodiment, the upper shell 14 and the tail cover 15 are integrally cast, completely eliminating the additional components such as connecting flanges and bolts in traditional split structures, as well as the resulting assembly gaps and potential fitting errors. This forms a perfect synergy with the connecting ribs 12 distributed circumferentially around the outer periphery of the outer shell body 1. The integral molding process makes the entire outer shell body 1, including the connecting ribs 12 and the assembly steps 13, a continuous, complete, and rigid whole. The reinforcing effect of the connecting ribs 12 is seamlessly transmitted throughout the entire shell, effectively avoiding stress concentration and structural weak points that may be caused by split connections, and greatly enhancing the deformation resistance and overall stability of the shell under complex working conditions.

[0023] The outer casing 1 includes an upper casing 14 and a tail cover 15. The bottom of the upper casing 14 is provided with an insertion step 141, and the tail cover 15 is provided with an insertion end 151. The insertion end 151 is used to insert into the insertion step 141 to form a mounting cavity 11. Specifically, one end of the tail cover 15 extends to the outside of the mounting cavity 11 and protrudes outwards. In this embodiment, the precise fit between the insertion step 141 and the insertion end 151 provides accurate radial and axial positioning for the tail cover 15, ensuring the dimensional accuracy and geometric tolerances of the mounting cavity 11, thereby guaranteeing the alignment of the internal motor components. The design of the tail cover 15 extending to the outside and protruding increases the contact area between the tail cover 15 and the external environment. The circumferential ribs on the outer periphery of the outer shell body 1 can guide airflow, significantly improving the overall heat dissipation performance. On the other hand, the protruding structure provides a direct and stable mounting base for external connectors. Working in conjunction with the mounting holes 121 at the ends of the ribs, it realizes a multi-level and modular installation scheme, enhancing the motor's adaptability to external structures and ease of integration.

[0024] The mounting cavity 11 is used to install the drive component 2 of the motor. The drive component 2 includes a drive motor 21 and a fixed base 22 arranged from the inside to the outside of the mounting cavity 11. The fixed base 22 is provided with a rotating connecting element 221 and is mounted in the mounting cavity 11 through the rotating connecting element 221. A transmission component 222 is installed in the fixed base 22, and a transmission connecting ring 111 is provided in the mounting cavity 11. The transmission connecting ring 111 is connected to the transmission component 222. The drive motor 21 is located at one end of the fixed base 22 and is used to drive the transmission component 222. In this embodiment, the mounting cavity 11 adopts a layout in which the drive motor 21, the fixed base 22, and the transmission connecting ring 111 are arranged sequentially from the inside to the outside, forming a modular powertrain with clear layers and reasonable force distribution. The fixed base 22 is mounted in the mounting cavity 11 through the rotating connecting element 221, bearing the transmission component 222 inside itself, effectively isolating the vibration of the drive motor 21 from the working load of the transmission component 222, and reducing mutual interference. The direct connection between the transmission connecting ring 111 and the transmission component 222 establishes an efficient, coaxial torque transmission path. The internal structure and the reinforcing ribs distributed circumferentially around the outer periphery of the outer shell 1 create a synergistic effect. The rib structure effectively suppresses shell deformation, ensuring that the rotation center of the fixed base 22 and the transmission center of the transmission connecting ring 111 remain precisely aligned, thereby significantly reducing transmission errors, vibration, and noise.

[0025] The fixed base 22 includes an upper support 223 and a lower support 224, which are interconnected. The transmission component 222 is disposed between the upper support 223 and the lower support 224. Specifically, two rotary connecting elements 221 are provided, which are used to connect the upper support 223 and the lower support 224 to the mounting cavity 11, respectively. In this embodiment, the split upper and lower support 224 structure realizes the modular packaging and convenient assembly of the transmission component 222, making the installation, debugging and maintenance of the transmission component 222 more convenient. The symmetrical arrangement of the two rotary connecting elements 221 provides balanced and independent support for the upper support 223 and the lower support 224, effectively decomposing and transmitting the radial force and vibration load generated by the operation of the transmission component 222 to the circumferential rib structure of the outer shell 1. The dual-point support structure greatly improves the installation stability and alignment of the fixed base 22 in the mounting cavity 11, effectively preventing deflection or shaking that may be caused by single-point support, ensuring the precise power transmission relationship between the transmission component 222, the drive motor 21, and the transmission connecting ring 111, thereby further reducing operating noise and wear, and extending the service life of the motor.

[0026] Assembly steps 13 are located at the front and / or rear end of the housing. This embodiment enables the housing body 1 to achieve rapid and precise positioning and connection with other external components (such as equipment brackets, mounting bases, or protective covers) via the assembly steps 13 at the front and / or rear ends, effectively improving the overall assembly efficiency and modularity. The arrangement of the assembly steps 13 complements the reinforcing ribs distributed circumferentially around the outer perimeter of the housing: the ribs primarily bear the radial and torsional loads generated by the internal transmission system, enhancing the housing's resistance to deformation; while the assembly steps 13 at the front and / or rear ends are specifically designed to withstand axial installation forces and interface stresses generated during connection with external structures, achieving clear separation and rational distribution of load paths.

[0027] Both ends of the connecting rib 12 are provided with mounting holes 121, and mounting sleeves 122 are provided in the mounting holes 121. In this embodiment, the mounting sleeves 122 are embedded in the mounting holes 121 at the ends of the rib, which effectively enhances the durability and wear resistance of the threaded connection and avoids the problem of thread stripping caused by repeated disassembly and assembly. It is particularly suitable for industrial scenarios that require high-frequency maintenance.

[0028] A transition arc surface 123 is provided on the outer side of the connecting rib 12, and the transition arc surface 123 is integrally cast with the outer circumference of the outer shell body 1. In this embodiment, the transition arc surface 123 eliminates the stress concentration phenomenon at the connection between the rib and the outer shell body 1 through a smooth curved surface transition, and evenly distributes the load to the entire rib and the outer shell wall, effectively preventing fatigue cracks caused by stress concentration.

[0029] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A ribbed structure for an electric motor housing, characterized in that: The device includes an outer shell body, which has an internal mounting cavity and a connecting rib on its outer periphery. Multiple connecting ribs are arranged in a circumferential manner on the outer periphery of the outer shell body. An assembly step is formed between one end of each connecting rib and the outer periphery of the outer shell body. An assembly hole is provided at the end of each connecting rib, with one end of the assembly hole facing the assembly step.

2. The motor housing rib structure according to claim 1, characterized in that: The outer shell body includes an upper shell and a tail cover. The tail cover is located at the bottom of the upper shell, and the upper shell and the tail cover are integrally cast.

3. The motor housing rib structure according to claim 1, characterized in that: The outer shell body includes an upper shell and a tail cover. The bottom of the upper shell is provided with an assembly insertion step, and the tail cover is provided with an insertion end. The insertion end is used to insert into the assembly insertion step to form a mounting cavity.

4. The motor housing rib structure according to claim 3, characterized in that: One end of the tail cap extends to the outside of the mounting cavity and protrudes outward.

5. The motor housing rib structure according to claim 1, characterized in that: The mounting cavity is used to install the drive component of the motor. The drive component includes a drive motor arranged from the inside to the outside of the mounting cavity and a fixed base. The fixed base is provided with a rotating connecting element. The fixed base is set in the mounting cavity through the rotating connecting element. A transmission component is installed in the fixed base. A transmission connecting ring is provided in the mounting cavity. The transmission connecting ring is connected to the transmission component. The drive motor is located at one end of the fixed base and is used to drive the transmission component.

6. The motor housing rib structure according to claim 5, characterized in that: The fixed base includes an upper support and a lower support, which are connected to each other, and the transmission component is disposed between the upper support and the lower support.

7. The motor housing rib structure according to claim 6, characterized in that: Two rotating connecting elements are provided, and the two rotating connecting elements are respectively used to connect the upper support and the lower support to the placement cavity.

8. The motor housing rib structure according to claim 1, characterized in that: The assembly steps are located at the front and / or rear end of the housing.

9. The motor housing rib structure according to claim 1, characterized in that: Both ends of the connecting rib are provided with assembly holes, and assembly teeth are provided in the assembly holes.

10. The motor housing rib structure according to claim 1, characterized in that: The outer side of the connecting rib is provided with a transition arc surface, which is integrally cast with the outer circumference of the outer shell body.

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